Abbreviation for acetylcholinesterase. See: Acetylcholinesterase.

early 15c., æche, from Old English æce, from Proto-Germanic *akiz, from same source as ache (v.).

Old English acan "to ache, suffer pain," from Proto-Germanic *akanan, perhaps from a PIE root *ag-es- "fault, guilt," represented also in Sanskrit and Greek, perhaps imitative of g [..]

a dull persistent (usually moderately intense) pain hurt: feel physical pain; "Were you hurting after the accident?" have a desire for something or someone who is not present [..]

a dull pain that goes on and on

v. To be in pain or distress.

pain that won't go away

(n) a dull persistent (usually moderately intense) pain(v) feel physical pain(v) have a desire for something or someone who is not present(v) be the source of pain

Acute or Chronic Pain located in the posterior regions of the Thorax; LUMBOSACRAL REGION; or the adjacent regions.

Acute or Chronic Pain in the lumbar or sacral regions, which may be associated with musculo-ligamentous Sprains and Strains; Intervertebral Disk Displacement; and other conditions.

Discomfort or more intense Forms of Pain that are localized to the cervical region. This term generally refers to Pain in the posterior or lateral regions of the neck.

n.(1) "aching, pain," s.v. ache sb.\1 OED. KEY: ache@n1

n1 1 ache 1

<botany> A name given to several species of plants; as, smallage, wild celery, parsley. Origin: F. Ache, L. Apium parsley. (01 Mar 1998)

A language spoken by the Yi people of South-Western China.